<template>
  <div class="loading-screen">
    <div class="loading-container">
      <!-- Logo区域 -->
      <div class="logo-section">
        <img src="../assets/logo.png" alt="Logo" class="logo" />
        <h1 class="app-title"> {{ admin_store.system_title }}</h1>
      </div>
      
      <!-- 动画区域 -->
      <div class="animation-section">
        <div class="loading-spinner">
          <div class="spinner-ring"></div>
          <div class="spinner-ring"></div>
          <div class="spinner-ring"></div>
        </div> 
        
        <!-- 进度条 -->
        <div class="progress-container">
          <div class="progress-bar">
            <div class="progress-fill" :style="{ width: progress + '%' }"></div>
          </div>
          <div class="progress-text">{{ loadingText }}</div>
        </div>
      </div>
      
      <!-- 版本信息 -->
      <div class="version-info">
        <p>版本 v1.0.0</p>
        <p>正在初始化系统...</p>
      </div>
    </div>
    
    <!-- 背景粒子效果 -->
    <div class="particles">
      <div v-for="i in 50" :key="i" class="particle" :style="getParticleStyle(i)"></div>
    </div>
  </div>
</template>

<script setup lang="ts">
import { ref, onMounted, onUnmounted,defineEmits } from 'vue'
import { adminStore } from '@/store/admin'
const admin_store = adminStore()

// 定义emit事件
const emit = defineEmits<{
  'loading-complete': []
}>()

const progress = ref(0)
const loadingText = ref('正在启动系统...')

const loadingSteps = [
  { text: 'Starting System...', duration: 1200 },
  { text: 'Connecting to Backend Service...', duration: 1500 },
  { text: 'Fetching Port Configuration...', duration: 1200 },
  { text: 'Initializing Gateway Connection...', duration: 1000 },
  { text: 'System Ready...', duration: 600 }
]

let progressTimer: number | null = null
let stepIndex = 0

const startLoading = () => {
  let currentProgress = 0
  const totalDuration = loadingSteps.reduce((sum, step) => sum + step.duration, 0)
  let elapsedTime = 0
  
  const updateProgress = () => {
    if (stepIndex < loadingSteps.length) {
      const currentStep = loadingSteps[stepIndex]
      loadingText.value = currentStep.text
      
      elapsedTime += 50
      currentProgress = Math.min((elapsedTime / totalDuration) * 100, 100)
      progress.value = currentProgress
      
      if (elapsedTime >= loadingSteps.slice(0, stepIndex + 1).reduce((sum, step) => sum + step.duration, 0)) {
        stepIndex++
      }
      
      if (currentProgress >= 100) {
        console.log('Loading complete. Attempting to resize window and show titlebar...');
        if (window.electronAPI) {
          if (typeof window.electronAPI.resizeWindow === 'function') {
            console.log('window.electronAPI.resizeWindow is available. Calling it.');
            window.electronAPI.resizeWindow();
          }
          if (typeof window.electronAPI.showTitlebar === 'function') {
            console.log('window.electronAPI.showTitlebar is available. Calling it.');
            window.electronAPI.showTitlebar();
          }
        } else {
          console.error('window.electronAPI is not available.');
        }
        
        // 发出加载完成事件
        console.log('发出loading-complete事件');
        emit('loading-complete');
      } else {
        progressTimer = setTimeout(updateProgress, 50);
      }
    }
  }
  
  updateProgress()
}

const getParticleStyle = (index: number) => {
  const size = Math.random() * 4 + 2
  const left = Math.random() * 100
  const animationDelay = Math.random() * 3
  const animationDuration = Math.random() * 3 + 2
  
  return {
    width: `${size}px`,
    height: `${size}px`,
    left: `${left}%`,
    animationDelay: `${animationDelay}s`,
    animationDuration: `${animationDuration}s`
  }
}

onMounted(() => {
  startLoading()
})

onUnmounted(() => {
  if (progressTimer) {
    clearTimeout(progressTimer)
  }
})
</script>

<style scoped>
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: linear-gradient(135deg, #0f1419 0%, #1a2332 50%, #0f1419 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  overflow: hidden;
}

.loading-container {
  text-align: center;
  color: #fff;
  z-index: 2;
  position: relative;
}

.logo-section {
  margin-bottom: 40px;
}

.logo {
  width: 160px;
  height: 160px;
  object-fit: contain;
  margin-bottom: 20px;
  filter: drop-shadow(0 0 20px rgba(29, 233, 182, 0.5));
  animation: logoGlow 2s ease-in-out infinite alternate;
}

@keyframes logoGlow {
  from {
    filter: drop-shadow(0 0 20px rgba(29, 233, 182, 0.5));
  }
  to {
    filter: drop-shadow(0 0 30px rgba(29, 233, 182, 0.8));
  }
}

.app-title {
  font-size: 42px;
  font-weight: bold;
  margin: 0;
  background: linear-gradient(135deg, #1de9b6 0%, #1dc8e9 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.animation-section {
  margin: 40px 0;
}

.loading-spinner {
  position: relative;
  width: 120px;
  height: 120px;
  margin: 0 auto 30px;
}

.spinner-ring {
  position: absolute;
  width: 100%;
  height: 100%;
  border: 3px solid transparent;
  border-radius: 50%;
  animation: spin 2s linear infinite;
}

.spinner-ring:nth-child(1) {
  border-top-color: #1de9b6;
  animation-delay: 0s;
}

.spinner-ring:nth-child(2) {
  border-right-color: #1dc8e9;
  animation-delay: 0.3s;
  width: 70%;
  height: 70%;
  top: 15%;
  left: 15%;
}

.spinner-ring:nth-child(3) {
  border-bottom-color: #5470c6;
  animation-delay: 0.6s;
  width: 40%;
  height: 40%;
  top: 30%;
  left: 30%;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

.progress-container {
  width: 300px;
  margin: 0 auto;
}

.progress-bar {
  width: 100%;
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 15px;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #1de9b6 0%, #1dc8e9 100%);
  border-radius: 2px;
  transition: width 0.3s ease;
  box-shadow: 0 0 10px rgba(29, 233, 182, 0.5);
}

.progress-text {
  font-size: 16px;
  color: #b0c4de;
  margin-top: 10px;
}

.version-info {
  margin-top: 40px;
  font-size: 14px;
  color: #7a8a9e;
}

.version-info p {
  margin: 5px 0;
}

.particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.particle {
  position: absolute;
  background: rgba(29, 233, 182, 0.6);
  border-radius: 50%;
  animation: float linear infinite;
}

@keyframes float {
  0% {
    transform: translateY(100vh) rotate(0deg);
    opacity: 0;
  }
  10% {
    opacity: 1;
  }
  90% {
    opacity: 1;
  }
  100% {
    transform: translateY(-10vh) rotate(360deg);
    opacity: 0;
  }
}

/* 响应式设计 */
@media (max-width: 768px) {
  .app-title {
    font-size: 28px;
  }
  
  .logo {
    width: 60px;
    height: 60px;
  }
  
  .progress-container {
    width: 250px;
  }
  
  .loading-spinner {
    width: 60px;
    height: 60px;
  }
}
</style>